非水体系合成不同形态的二氧化钛纳米晶及其光催化性能

In this paper, TiO2 Nanocrystals were synthesized by Solvothermal method using nonhydrolytic solution-based reactions. It had strong photocatalytic degradation activity under visible light. The experimental results show that spherical TiO2 nanocrystal which diameter was 8 nm was synthesized when the surfactant was not added and club-shaped TiO2 nanocrystal was synthesized when adding oleic acid as the surfactant. The growth mechanism of different crystal structure TiO2 nanocrystals was that the growth rates of the different crystal surfaces of TiO2 were different in the influence of surfactant. It was found that two forms of TiO2 nanocrystals had the performance of photocatalytic degradation of methyl orange.